Get rid of most of the flags (in tp_flags) that keep track of various
variations of the type struct and its attachments.  In Py3k, all type
structs have to have all fields -- no binary backwards compatibility.
Had to change the complex object to a new-style number!
diff --git a/Modules/_functoolsmodule.c b/Modules/_functoolsmodule.c
index 54abb89..7b23210 100644
--- a/Modules/_functoolsmodule.c
+++ b/Modules/_functoolsmodule.c
@@ -219,7 +219,7 @@
 	PyObject_GenericSetAttr,	/* tp_setattro */
 	0,				/* tp_as_buffer */
 	Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
-		Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HAVE_WEAKREFS,	/* tp_flags */
+		Py_TPFLAGS_BASETYPE,	/* tp_flags */
 	partial_doc,			/* tp_doc */
 	(traverseproc)partial_traverse,	/* tp_traverse */
 	0,				/* tp_clear */